Fujitsu PRIMERGY BX600 S3 Service Supplement Manual page 22

Notes on power cabling
Single basic unit with two UPSs
UPS
Figure 6: Single basic unit with two UPSs
If you need higher availibility, you can connect a single BX600 S3 basic unit to
two UPS devices. In this case you must take into account that each UPS must
provide approximately 5120 Watts to power the basic unit, even if the mains
supply and one UPS were to fail.
22
UPS
Service Supplement
Important notes
Single-phase
or
3-phase input